Lawn mower



Oct. 25, 1949. F. A. NEWMAN LAWN MOWER 2 Sheets-Sheet 1 Filed Aug. 30,1945 INVENTOR.

1949. F. A. NEWMAN 2,485,934

LAWN MOWER Filed Aug. 50, 1945 2 Sheets-Sheet 2 IN V EN TOR;

Patented Oct. 25, 1949 UNITED STATES PATENT OFFICE 1 Claim.

This invention relates to lawn mowers and has for its main objects toprovide a mower that is highly efficient, easy to operate, cheap tomanufacture, and requires very little attention to keep it in workingorder. Other objects and advantages will appear from the drawings anddescription.

The present mower is power driven either by electric or internalcombustion motor, the electric power being supplied from an outsidesource not shown.

It is provided with a revolving horizontal blade that has four cuttingedges so that when two cutting edges become dull the blade may bereversed to use the other two cutting edges before it becomes necessaryto remove the blade for a regular sharpening.

By referring to the drawings, part of this application, it will beobserved that Fig. 1 is a plan view of the lawn mower; Fig. 2 is a sideview of the lawn mower; Fig. 3 is a large scale plan View of mower lesspart of handles and rear wheel; and Fig. 4 is a large scale sectionalelevational view of mower less part of handles and rear wheel.

Similar reference numerals refer to similar parts throughout the severalviews.

Again referring to the drawings in detail it will be seen that thedevice comprises amain axle 2 carried in a housing I. There is also arear axle I! supported in a two part cross member 20 that is attached atits ends near the bottom of arms 8 that are adjustably connected at 22with the main assembled loop handles 1 that are also adjustable. Threewheels I! support the mower assembly. An electric motor I5 is carried ina, housing 9l attached slidably to a support that is mounted upon themain axle housing I. Attached to the lower end of the motor shaft 2| isa straight narrow fiat blade 3 with hub 4 and four cutting edges so thatwhen two cutting edges become dull the blade can be detached andreversed to use the other two edges. This blade is adapted to berevolved by the motor at high speed. The

lar for raising or lowering the motor to set the blade, for instance inits lowest position 3a to cut grass very short. After the motor andblade are set at the desired height the clamp bolts l9 are set tight tohold the motor and blade in fixed position for operation. For safety anouter guard I8 is carried on the front of the assembly, and also a guard6 over the blade. An electric switch 6 for control of the motor iscarried on one of the handles.

The mower may be made of any material best suited for the purpose. WhileI prefer to use an electric motor where a source of power is available,a small internal combustion motor may be substituted.

While I have shown and described the preferred embodiment of myinvention, I do not wish to limit same to the exact and precise detailsof structure, but reserve the right to make all modifications andchanges so long as I remain within the spirit and scope of the followingclaim.

Having described my invention I claim:

In a power driven lawn mower of the class described comprising; a mainframe, a, front axle attached to the frame with a wheel on each end ofthe axle, a rear axle supported in the rear end of the frame, one wheelmounted in the center of the rear axle, a pair of curved looped handlespositioned formanual pushing of the mower, the handles continued intothe main frame and forming loops therein and extending rearwardly to therear axle with the one wheel thereon; an electric motor mounted forwardof the front axle, the shaft of the motor being perpendicular, a doubleedge blade attached to the lower end of the motor shaft.

FREDERICK A. NEWMAN.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,805,927 Sharp May 19. 19311,831,681 Miller Nov. 10, 1931 1,876,504 Rossiter et a1. Sept. 6, 19322,243,133 Steiner et a1 May 27, 1941 2 308.076 Hainke Jan. 12, 1943

